William d



(NoModl.)

W. D. HOOKER.

PUMP. No. 265,261. Patented Oct. 8, 1882.

WETUH STATES tlrTa PATENT Trice.

PlJiViP.v

SPECIFICATION forming part of Letters Patent No. 265,261, dated October 3, 1882.

Application iled December 15, 1881.

llo all whom it may concern:

Be it known that I, WILLIAM D. HOOKER., aoitizen of the United States, residing at St. Louis, iu the State of Missouri, have invented certainnewandusefulmprovementsin Pumps; and I do hereby declare 'the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the aecompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My present invention relates to a peculiar arrangement of pump-valves and provisions for attaching the caps or covers to the pumpchambers, and originally formed a part of an application for a steam pumping-engine made by me on the 21st day of September, 1881.

This present invention consists in an improved construction of valve-guides for fixing and supporting in place several pairs 0f valves on a single rod, and in a novel slot or recess in the framing of' the chamber to receive the head of a fastening-bolt for securing in place the cap or cover.

The accompanying drawings form a part of this specication,and illustrate the best means ot' applying the invention.

Figure 1 is a side elevation of the end of the pump, showing the connected parts of a pumping-engine. Fig. 2 is a vertical longitudinal section. Fig.3 is an enlarged cross-section of the valves. Fig. 3 is a detail showing the threaded top of the valve-guide and associated parts. Fig. 1 is a longitudinal section of the valves. Figs. 5 and 6 are details of the peculiar bolt and slot.

Similar letters ot' reference indicate corre sponding parts in all the views.

D is the casing of the pump. D is the cylinder in which the piston, worked from the engine, (not shown,) plays. Above this cylinder the valve-chamber ot' the pump is provided with bridges D2 D3, set in reverse inclines provided with valve-passages over which the series ot' valves ot' the peculiar construction hereinafter described lit. At -each end of the pumpcylinder Dl a chamber, s, is formed, which has a discharge-opening controlled by a cock, t. Into these chambers all the mud and sediment drawn into the pump are collected and escape (No model.)

through the discharge-opening. The valves V are arranged over the bridges DZDS. They are fixed in pairs to and along each side of a tube or sleeve, S', and then by means of a single rod, T, the ends of which rest in sockets T in the side ofthe pump and the cover, the whole set of valves is secured in place without other fastening. The tube S carries the laterally-projecting lugs U, in the ends of which openings are threaded to receive the valveguides V', by means of which each valve V may be adjusted independently ot' the others. Springs S2, lying between the cross-pieces U and the valves V, afford the proper yielding pressure upon the valves. The valve-guides Vl are threaded at the upper ends, where they pass 'through the ends ot' the cross-piece V, and are smooth at the bottom, where they rest in the valve-seats. In the drawings I have shown six valvesin each chamber. The bridges D2 DJ are united by a center tree, D", at the angle Where they join.

The side of the pump is formed with openings, in order that the parts inside may be inspected or repaired. Removable covers are provided for the openings, and the peculiar manner of attaching these covers is important. Instead of the ordinary top bolt, I use a bolt with a T-head on theinner end, and in the metal of the pump-case, behind the rim 0f the cover l, I form a recess, a', which presents'on the surface simply a rectangular slot, w, of a size to readily take in the Thead of the bolt; but the bottom ot' the slot is cut out and affords a recess which allows the bolt, when inserted in it, to be turned across the line ot' the slot. To control the movement of the bolthead, I form in the recess four stops, a' .r m', two of which are in line with the edges ofthe slot, while the other two are substantially at right anglesto it. Two ot' these stops, a" w', hold the bolt in position and prevent its turning while the nut omthe outside of the cover Z is being screwed down, while the other tivo stops; x bring the head into line with the slot when the bolt is turned back in loosening the cover, so that the T-head y can be readily drawn out of the slot by simply turning the bolt a part of a revolution in a backward direction. The cover l by this means can be easily detached and lifted outof place without removing the bolts from it.

IOO

This device is important as providing,r a substitute for the usual screw or swing` bolts employed for this purpose.

.Having thus described my invention, I desire to claiml. In combination with one or more sets of vulves and valve-guides, V', the tube S', having the projecting stops U to receive the ends of the guides V', the rod T, adapted to support the tube, and the sockets T' in the sides of the pump-case and the cover to receive the ends ot' the rod, substantially as set forth.

2. The combination of the sleeve S', having` the projecting stops U, provided with screwthreadedopenings at theirends, with the screwthreaded guides V', entering the openings in the ends ofthe stops, and with the rod T and valve V, substantially as set forth.

3. The combination ot' the recess for receiving the fastening means, having the direct rectangular cut w extending the full depth of the recess, and a short cut, w', at the bottom thereof, so formed as to present the stops a; m', with the T- headed bolt adapted to enter the cut w and be turned in the cut w', sub stantially as set forth.

In testimony where I aix my signature in presence ot' two Witnesses.

WILLIAMv DAVIS HOOKER.

Witnesses WALTER C. CARR, WM. P. BENTLEY. 

